Upstream side of dam showing intake towers that are almost finished. Reservoir (Lake Mead) has begun to fill, and a man is rowing a boat on the lake. There are derrick cranes visible on both sides of the canyon.

Upstream side of Hoover Dam showing the intake towers, which are almost finished. The reservoir (Lake Mead) has begun to fill, and a man is rowing a boat on the lake. There is a wooden walkway laid over piers or...

Shows upstream side of the dam with the almost-finished intake towers. Also shows the mouth of a diversion tunnel and derrick cranes on both sides of the canyon. The reservoir (Lake Mead) has begun to fill.

Shows upstream face of dam with almost-completed intake towers. The reservoir (Lake Mead) has started to fill, and a man is rowing a boat on the lake. The mouth of a diversion tunnel on the left side of the picture...